﻿// ===================================
// <copyright>LogoUI Co.</copyright>
// <author>Vlad Spivak</author>
// <email>mailto:vlads@logoui.co.il</email>
// <created>21/00/10</created>
// <lastedit>Sunday, November 21, 2010</lastedit>

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
//
// <remarks>Part of this software based on various internet sources, mostly on the works
// of members of Wpf Disciples group http://wpfdisciples.wordpress.com/
// Also project may contain code from the frameworks: 
//        Nito 
//        OpenLightGroup
//        nRoute
// </remarks>
// ====================================================================================//


using System.Windows;
using System.Windows.Controls;

namespace LogoFX.Infra.Interactivity
{
    //todo:clarify usecase
    public class SwitchParentAction
        : System.Windows.Interactivity.TriggerAction<DependencyObject>
    {

        private DependencyObject _originalParent;


        public SwitchParentAction()
        {

        }

        public FrameworkElement Target
        {
            get { return (FrameworkElement)GetValue(TargetProperty); }
            set { SetValue(TargetProperty, value); }
        }

        // Using a DependencyProperty as the backing store for Target.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty TargetProperty =
            DependencyProperty.Register("Target", 
            typeof(FrameworkElement), 
            typeof(SwitchParentAction), 
            new PropertyMetadata(null));



        public DependencyObject NewParent
        {
            get { return (DependencyObject)GetValue(NewParentProperty); }
            set { SetValue(NewParentProperty, value); }
        }

        // Using a DependencyProperty as the backing store for NewParent.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty NewParentProperty =
            DependencyProperty.Register("NewParent", 
            typeof(DependencyObject), 
            typeof(SwitchParentAction), 
            new PropertyMetadata(null));

        

        protected override void Invoke(object parameter)
        {
            this.SwapParent();
        }

        private void SwapParent()
        {
            if (this._originalParent == null)
                this._originalParent = this.Target.Parent;

            
            DependencyObject newParent;

            if (this.Target.Parent == this._originalParent)
            {
                newParent = this.NewParent;
            }
            else
            {
                newParent = this._originalParent;
            }

            this.RemoveTarget();
            this.AddTarget(newParent);
                    
        }


        protected void AddTarget(DependencyObject newParent)
        {

            if (newParent.GetType() == typeof(Border))
            {
                ((Border)newParent).Child = this.Target;

            }
            else if (newParent.GetType() == typeof(Panel))
            {
                ((Panel)newParent).Children.Add(this.Target);

            }
            else if (newParent.GetType() == typeof(ContentControl))
            {

                ((ContentControl)newParent).Content = this.Target;

            }

        }

        protected void RemoveTarget()
        {


            if (this.Target.Parent.GetType() == typeof(Border))
            {
                ((Border)this.Target.Parent).Child = null;

            }
            else if (this.Target.Parent.GetType() == typeof(Panel))
            {
                ((Panel)this.Target.Parent).Children.Remove(this.Target);

            }
            else if (this.Target.Parent.GetType() == typeof(ContentControl))
            {

                ((ContentControl)this.Target.Parent).Content = null;

            }
        }

    }
}
